refactor: migrate to objection.js + knex

server/db/seeds/settings.js

@@ -0,0 +1,11 @@
+exports.seed = (knex, Promise) => {
+  return knex('settings')
+    .insert([
+      { key: 'auth', value: {} },
+      { key: 'features', value: {} },
+      { key: 'logging', value: {} },
+      { key: 'site', value: {} },
+      { key: 'theme', value: {} },
+      { key: 'uploads', value: {} }
+    ])
+}